diff options
author | 2016-04-11 10:41:07 +0300 | |
---|---|---|
committer | 2016-04-13 08:17:18 +0300 | |
commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/usb/gadget/function/u_serial.c | |
parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/usb/gadget/function/u_serial.c')
-rw-r--r-- | kernel/drivers/usb/gadget/function/u_serial.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/kernel/drivers/usb/gadget/function/u_serial.c b/kernel/drivers/usb/gadget/function/u_serial.c index 7ee057930..f7771d86a 100644 --- a/kernel/drivers/usb/gadget/function/u_serial.c +++ b/kernel/drivers/usb/gadget/function/u_serial.c @@ -114,6 +114,7 @@ struct gs_port { struct gs_buf port_write_buf; wait_queue_head_t drain_wait; /* wait while writes drain */ bool write_busy; + wait_queue_head_t close_wait; /* REVISIT this state ... */ struct usb_cdc_line_coding port_line_coding; /* 8-N-1 etc */ @@ -876,7 +877,6 @@ static void gs_close(struct tty_struct *tty, struct file *file) else gs_buf_clear(&port->port_write_buf); - tty->driver_data = NULL; port->port.tty = NULL; port->openclose = false; @@ -884,7 +884,7 @@ static void gs_close(struct tty_struct *tty, struct file *file) pr_debug("gs_close: ttyGS%d (%p,%p) done!\n", port->port_num, tty, file); - wake_up(&port->port.close_wait); + wake_up(&port->close_wait); exit: spin_unlock_irq(&port->port_lock); } @@ -1044,6 +1044,7 @@ gs_port_alloc(unsigned port_num, struct usb_cdc_line_coding *coding) tty_port_init(&port->port); spin_lock_init(&port->port_lock); init_waitqueue_head(&port->drain_wait); + init_waitqueue_head(&port->close_wait); tasklet_init(&port->push, gs_rx_push, (unsigned long) port); @@ -1074,7 +1075,7 @@ static void gserial_free_port(struct gs_port *port) { tasklet_kill(&port->push); /* wait for old opens to finish */ - wait_event(port->port.close_wait, gs_closed(port)); + wait_event(port->close_wait, gs_closed(port)); WARN_ON(port->port_usb != NULL); tty_port_destroy(&port->port); kfree(port); @@ -1224,7 +1225,6 @@ int gserial_connect(struct gserial *gser, u8 port_num) fail_out: usb_ep_disable(gser->in); - gser->in->driver_data = NULL; return status; } EXPORT_SYMBOL_GPL(gserial_connect); @@ -1264,10 +1264,7 @@ void gserial_disconnect(struct gserial *gser) /* disable endpoints, aborting down any active I/O */ usb_ep_disable(gser->out); - gser->out->driver_data = NULL; - usb_ep_disable(gser->in); - gser->in->driver_data = NULL; /* finally, free any unused/unusable I/O buffers */ spin_lock_irqsave(&port->port_lock, flags); |